Hi guys im new on this forum problem with plant.

[denoss]

Hi guys I'm 5 weeks in with a photoperiod and I've noticed the edges of a big fan leaf has started turning brown and looking crispy. Does anyone know what could be the cause of this? Currently I'm growing in a very small tent 60x40x60 but will be moving to a bigger tent in the next week, I've been making sure I've had the ph of the water between 6-7 and only just started to nute the plant with 4ml of terra vega per 1 litre of water. Any help will be greatly appreciated.

 

[BigBlonde]

The leaf-edge necrosis resembles a potassium deficiency.

 

[Eledin]

What soil are you using? It appeared before starting the nutes right? When did you start the nutes exactly? It matches with potassium deficiency I agree. A good way of adding more potassium and also silica to get them thicker and stronger against pests is getting some potassium silicate. But maybe with the regular canna nutes youre using it will go away.